Friction-clutch.



C. K. TRIPP.

PRIGTXGN CLUTCH. APPLICATION FILED APR. 7.1968.

rammed A131127, 1909.

lfm/ENTER WITNEEIEEE i. euntybfEsseg State of Massachusetts, have indiietionfmotor," to a inahine whit-.his to'be para@ aegdvingmembenzard'prordcd ,with eentrifugall'yoperat'edrneansfor' eliit'eli 'ease tliefclutehing effect varies with the speed im@ i. 2 Syd'trn I provide 'the drivingnieinber'witli )esg'-outside1lia1neter tlianthe inside liainerer Of theldnven lneinberland rearranged `to be 3o gage the "driven member and is 4then locked vdriving connection.

iz' my invention are .pointed out with pare tieularit in the claims annexed and forming a part o this s iecilication.

' derstanding o my invention, however, and

Y be had to the ollowingr description taken in 4o connection with the' accompanviug drawiu'gf, 'in wl1ic.h-

F'Q'ure 1 shows a section of'my clutcli'on the line 1 1 of Fig. 2 looking in tliedirection shaft, is kept from moving axially a ong the shaft to any great extent by suitable means,

Patent. l

` signeren mea Anali, 1eos. serai N9 425,643;

eitizenioi the United Statea'residing 'at Lvnn,

'at a slow? speed. The ring 10 -has' two pro- Vs nial! starting fififrqe'sueh as asingle phase v bers should not be eoupledtoge'tlier until-thel Heretofre hentrifuglal-e`lutclie`s-have been t5 ring fastened at'on'e l 2o ing it totli'e 'driven member. ISince-in suehal .ofthe '.ifiotor there' will :bea tendencyv on the'v i apart f Q'f.tlie-dlvehgniember toj'slip when the *becomes heavily loaded'.v By my in# ilegible split ring which isfnormally of slightly vthr )w n' outwardly by centrifugal force toy en? tothe driven member so as to rin' a positive 011er features of no i'clty which el'rarru'ftcr-I.

Fora bettertssl ,the'advantages possessed by it reference mayl of the arrow.; Fig. 2 is an end 'view of Fig. 1,

suitable pin 4 is fastened in' the disk near its outer pc-.

6, an .a hub 7 loosely mounted u pon tilei PATENT" OFFICE. 1 i. "..YJBIJS IgfrRLi-R'QF IYNQAISSGHSETTS,Assrenonfro eENnAtELneTRioGenerar, i

FnrTIon-QLUTGH-- 'Patented .epm 2'7, 190e.

such as by a nut 8 whichl is screwed -up'onthe '"5 end ofthe shaft The shellohas a rim 9 which in eloses 'the .eluteli mechanism. The flexible 4o`r spring split-ringl has 'a' normal mitside. dianieterslightly-less than the insidev g3 diameter ofthe flange 6, as shown inthe j lrawingf; and also basa-projectingflange-1l My mven'txon relates to` frietion'elutches.

wliieli engages the. periphery of tliediskf, when thedriving niotoris at rest or rotating jeotin'g portionsll which are loc-ated on both' sides of the split 13 and sur, gort the lever 1li. ltIy-'invent-ioiijispartioularly a plie-able to -niotors in which the driving and riven niem- .driver hasl attained. 'a Acertain speed, which, in the-oase of'a single phase induction niotor, jis nearly lits normal speedivv By tl1e.use.of mykfoupling, the sl'iaft l-rotates, and lwith it the disk 3 and the flexible ring 10 but since the outside diameter ofthe 1-ing is. sliglitly less thanv the inside 'diameter of the rim 9', theL ulley 5 remains stationa until the. motor ias obtained nearly-its'fuxll, speed, when the ring is thrown 'outwardly-by centrifugal for-3e. It will not, however, o'rip therim Q of 4the ulley` with'fsufllcient orc'eto rotate `the pu ey-at the samespeed as the ring, nor will the ring rotate at the samespeed asthe "disk 3 but lagsslightly behind. This lagging bel'iind continues until the in Lleen'- "so l P. gaffestheleverll; The lever expands the is it ring' 10 so as to positively 'ook it to T`t .rim of the pulley, and thereafter tlie pin -.a11d lever as a positive driving mechanism, the )ulley 5 rotating at tlie same s 'eed as tlie shaft; 1. When the power is drive and slows down, the pin releases itsthe centrifugal force is not suilicient to hold the flexible ring' away from the disk, 'the pulley is unelutehed. I desire it to be understood `that my invention is not lirnitedto the particular eon- 10u struction shown and described, and I aim v in the. appended claims to eover all modiie'ations'whieli'do not departfrom the spirit of' my invention. Y

What I claim as new and desire to secure 305 by Letters Patent of the United States, is: f 1. In a centrifugal clutch, a driving meniber, a 'member to be driventhereby, and a'. clutch member comprising a lexible split. v

ring normally of slightly less outside diame- 1 0 t rown ol' the motor, the shaft 1 ceases to.

ter'than the .inside diameter ofA saiddriven memberl fand. arranged to be thrown'out-Q 'wardly- .by centrifugal force. to engage said j A flange, a levermec lockingsaid driven membefand meansfor positively to said driven member; 2. vIn'afeentr'lugal cluteh`,"a driving-mem-- lb er,-"aI'nember to be driven thereby anda clutchm`ember 'eomnri'sing ailexible split "ring normally of sngnmy' less outside diame- 'ter than theinside diametjer.c f=v said driven member-fand?. g'mariged. osib; tlrown .out-- Wardly' by' centrifu' al` .frce to enga' e said driven' 1 nember',an means o eratedy said driving member for. gpositive y llooking said vringvtosaid drivenlmember,

'meinber comprising a .split rmg-normallyof slightly'less outside diameter' than lthe inside engaged by said diameter o'said flange andarran'ged to be tlirwn outwardly by centrifugal force to en-A gagesaid flange and a: leye'rv arranged to -be pinand expand said split firing when said ring 'basi been thrvn'r outwardl' and engages said flange.- a eentringaleluteh, a driving niember, apin on' s aid driving mex'nber,l La tlanged.

.member to be driven thereby,l anda clutch member .com 'rising a .ilexiblesplit ringJiorymally of slig tlyless outside (hameter thantlie inside .diameter of said .flange andar-r ranged to be'tbrown 'outwardly by-e'entrifu'- gal force to engage said flange, a lever held 'e said pin', andtbereb expand said sp and engages 4said -flange.4 v

ltened, thereto, a tlangedfmem 'rr loosely mounted thereon, a flexible s )lit ling 'nor-4 mally of sl htly less outside ia'meterthan .the-'inside (iameter of s aid'flangeandlar-y ranged to bethrown.outwardlyby centrifugal 'force to engage said flange,` and means for positively driving'said ringby .said-meinytates at'a vsu'lieient speed to throw Isaid ring ,outwardly to engage 'sind flange. f l A 7,.- In combination, a shaft, a flanged mem- 'tbereto', a flexible split ring which is nor-` 'said disk. when said shaft is at rest and is ar orzpositiv'ely driving said ring'by said 'disk thereto, a v4pin 'von lsaid driving member,` 'a

ter of` saidflange, embraces .said disk when. said 'shaftis at rest and is arrangedto be. thrown outwardly 'by centrifugalfereetoen? gage said' flange, and a lever .adapted to be engaged by saidpin and therebyy expand'said outward y and engageaA said flange."

In Witness whereof, I have my band thistbird day of April,.1 908.

mally of slightlyless outside diameter than the inside diameter of said flange, .exribraeesflanged member loosely mounted on said` sh aft, a split ring which is normally o f slightly: less outside diameter'than the inside (llame -sphtgr'in when 'said ring has 'been thrownV hereunto l set 'by said ring and ad'antedto beengaed-by tiring; whensaid ringhas een thrown outwardly 6. v In combinatioma shaft,I emberfasber fastened tolsaidsli'a'ft when saidfsbaftnroff ber looselymounted thereon; a diskfastened v rangedto -be -thrown outwardly by eentrifir- 'A 'al force to engage said flange. and means .g-

70 when said shaft rotates at a sufficientv speed. -tothrow said ring outwardly tolengagezsaid 1:8. In' Combination, a shaft,'a j i soi:

4CHARLES fK. .TRIER 

